Matching Reqs without suffix

[Gustav van der Merwe]

Hey, I've noticed a horrible situation with Req. It matches suffixes with filenames that have one . but if there are two .s in the filename than it is treated as suffixless and the everything after the last / is treated as the filename.

"""
def serve: LiftRules.DispatchPF = {
case "files" :: filename :: Nil Get _ => {
"""

The above will match /files/data.dot with filename being "data" and /files/data.dot.dot with filename as being "data.dot.dot"

Is there any way to construct a match against a Req that doesn't care about suffixes? I know one can special case it via XmlGet etc but I want to go in the other direction, make it more general. Is there some way in which the last part of the URL can be treated uniformly?

Regards,
Gustav van der Merwe

[Joe Barnes]

Hi Gustav,

So great news! Lift is totally configurable in this regard.  You can prepend your own URI splitter which does not mess with the suffix:

val splitter:SplitSuffixPF = {
  case parts => // <= Parts is a List[String] of each part between slashes
    // Since you want the entire filename without the suffix split, there is nothing to do
    // but return the parts and an empty suffix
    (parts, "")
}

And add it during Boot:

class Boot {
  def boot {

    // Other stuff...

    LiftRules.suffixSplitters.prepend(RestApi.splitter)
  }
}

Now filename will always have the suffix.

You can see this working in this sample project.  Run the application, and navigate to http://localhost:8080/test/my-file.txt

Joe

[Joe Barnes]

BTW, I updated the example to make sure it is clear to you that you can customize the splitting for only when it matches your rest endpoint.  In this case, mine will only do our custom split when the URI starts with "test":

val splitter:SplitSuffixPF = {
  case parts @ ("test" :: _) => // <= Parts is a List[String] of each part between slashes, matching only if starts with "test"

    
    // Since you want the entire filename without the suffix split, there is nothing to do
    // but return the parts and an empty suffix
    (parts, "")
}

Joe

[Gustav van der Merwe]

On 10/04/2015 05:08 PM, Joe Barnes wrote:
> BTW, I updated the example to make sure it is clear to you that you can customize the splitting for only when it matches your rest endpoint. In this case, mine will only do our custom split when the URI starts with "test":
>
> val splitter:SplitSuffixPF = {
> case parts @ ("test" :: _) => // <= Parts is a List[String] of each part between slashes, matching only if starts with "test"
>
> // Since you want the entire filename without the suffix split, there is nothing to do
> // but return the parts and an empty suffix
> (parts, "")
> }
>

Awesome. Exactly what I need. Thanks Joe!

[Joe Barnes]

No problem, Gustav. Thanks for using Lift.

Joe

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